zmeiresearch/EspIOThis is a simple carrier board for ESP32-DevKitC (30-pin version) that implements a number of I/O channels: - 8 Digital Inputs with protection and solder-time input range selection.
EspIO is an open-source printed circuit board by zmeiresearch, from the zmeiresearch/EspIO repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 99.1 × 72.4 mm with 133 parts on 93 nets, routed with 612 tracks and 56 vias.
It is built around the AM1SS-0512SJZ, SN75176AP and TC4427EOA, with the BAT54S, BCR141 and 100UF/16V among its other parts. Its parts include 43 resistors, 30 diodes, 19 capacitors, 9 ICs and 8 transistors. It belongs with the interfaces and adapters boards and the ESP32 boards of this library.
This is a simple carrier board for ESP32-DevKitC (30-pin version) that implements a number of I/O channels:
| Qty | Value | Footprint | References |
|---|---|---|---|
| 27 | 1k | Resistor_SMD:R_0805_2012Metric | R1001, R1002, R1003, R1004, R1101, R1102, R1103, R1104, R1201, R1202, R1203, R1204, R1301, R1302, R1303, R1304 +11 |
| 16 | LED | LED_THT:LED_D3.0mm | D203, D303, D403, D503, D603, D703, D803, D903, D1001, D1002, D1101, D1102, D1201, D1202, D1301, D1302 |
| 9 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP101, JP201, JP301, JP401, JP501, JP601, JP701, JP801, JP901 |
| 8 | 10nF | Capacitor_SMD:C_0805_2012Metric | C201, C301, C401, C501, C601, C701, C801, C901 |
| 8 | 2.2k | Resistor_SMD:R_0805_2012Metric | R201, R301, R401, R501, R601, R701, R801, R901 |
| 8 | 22k | Resistor_SMD:R_0805_2012Metric | R203, R303, R403, R503, R603, R703, R803, R903 |
| 8 | BAT54S | Package_TO_SOT_SMD:SOT-23 | D201, D301, D401, D501, D601, D701, D801, D901 |
| 8 | BCR141 | Package_TO_SOT_SMD:SOT-23 | Q1001, Q1002, Q1101, Q1102, Q1201, Q1202, Q1301, Q1302 |
| 5 | 100uF/16V | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C101, C102, C103, C104, C105 |
| 4 | 10nF | Capacitor_SMD:C_1206_3216Metric | C1001, C1101, C1201, C1301 |
| 4 | Jumper_3_Open | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP1001, JP1101, JP1201, JP1301 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad | H101, H102, H103, H104 |
| 4 | TC4427 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U1001, U1101, U1201, U1301 |
| 2 | 1N5818 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D102, D103 |
| 2 | 2EDGR-5.08-05P-14-00AH | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_5-G-5,08_1x05_P5.08mm_Horizontal | J101, J102 |
| 2 | Screw_Terminal_01x06 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_6-G-5,08_1x06_P5.08mm_Horizontal | J105, J106 |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1401 |
| 1 | 22uF/25V | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C106 |
| 1 | AM1SS-0512SJZ | Zmei_footprints:Converter_DCDC_AM1SS | U103 |
| 1 | ESP32DevKit_30pin | Zmei_footprints:ESP32DevKit_30pin | U102 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U104 |
| 1 | LM7812_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U101 |
| 1 | MDB10S | Package_SO:TSSOP-4_4.4x5mm_P4mm | D101 |
| 1 | Rx | LED_THT:LED_D3.0mm | D1401 |
| 1 | SN75176AP | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U1401 |
| 1 | Screw_Terminal_01x02 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_2-G-5,08_1x02_P5.08mm_Horizontal | J103 |
| 1 | Screw_Terminal_01x03 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_3-G-5,08_1x03_P5.08mm_Horizontal | J104 |
| 1 | TE | LED_THT:LED_D3.0mm | D1402 |
| 1 | Tx | LED_THT:LED_D3.0mm | D1403 |
| 1 | Zmei-logo-small-inverted_silk | Zmei_footprints:Zmei-logo-small-inverted_silk | G*** |
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It measures 99.1 × 72.4 mm and has 2 copper layers, 1.6 mm thick.
133 parts, built around the AM1SS-0512SJZ, SN75176AP, TC4427EOA and BAT54S. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the zmeiresearch/EspIO repository on GitHub, at the commit this page was made from: the board is hw/EspIO.kicad_pcb and its schematic hw/DigitalInput.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).